| 光谱学与光谱分析 |
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| Rapid Identification of Hogwash Oil by Using Synchronous Fluorescence Spectroscopy |
| SUN Yan-hui, AN Hai-yang, JIA Xiao-li, WANG Juan |
| School of Bio & Food Engineering, Chuzhou University, Chuzhou 239012, China |
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Abstract To identify hogwash oil quickly, the characteristic delta lambda of hogwash oil was analyzed by three dimensional fluorescence spectroscopy with parallel factor analysis, and the model was built up by using synchronous fluorescence spectroscopy with support vector machines (SVM). The results showed that the characteristic delta lambda of hogwash oil was 60 nm. Collecting original spectrum of different samples under the condition of characteristic delta lambda 60 nm, the best model was established while 5 principal components were selected from original spectrum and the radial basis function (RBF) was used as the kernel function, and the optimal penalty factor C and kernel function g were 512 and 0.5 respectively obtained by the grid searching and 6-fold cross validation. The discrimination rate of the model was 100 % for both training sets and prediction sets. Thus, it is quick and accurate to apply synchronous fluorescence spectroscopy to identification of hogwash oil.
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Received: 2012-02-21
Accepted: 2012-05-25
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Corresponding Authors:
SUN Yan-hui
E-mail: syh2004@126.com
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